Resonant circuit element having insignificant microphonic effects
US5105175A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 12, 1991 |
| Grant date | Apr 14, 1992 |
| Priority date | — |
| Expiry date | Mar 12, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P11/008
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A rigid, monolithic structure for the resonator elements of a tuned stripline segment which may be adjusted by simple, low cost techniques. The resonator elements use a stripline segment (23,24) made from conductive layers of a multilayer printed circuit board. This structure allows the stripline segment to be totally enclosed in a solid, incompressible dielectric material (15,17) which is essentially immune to microphonic effects. A plurality of shorting holes (21) are fabricated at one end of the stripline which serve to short circuit the stripline segment (23) to the ground conductors (18,19) on the layers above and below the stripline segment (23). Adjustment of the resonant frequency is accomplished by removing the plated conductor inside one of the holes at a time, thus removing the short, until the desired resonant frequency is obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.